The 1-pc BERICAP DoubleSeal SuperShorty screw closure, made of HDPE, with a 120 knurls design and equipped with an inner and outside sealing lip, provides a superior tight seal for 28mm PET one-way bottles with PCO 1881 neck. The slit flex band provide reliable tamper evidence, assures the integrity of the product and breaks reliable after first opening. The closure is suitable for STILL products only!